Function Test. Chevrolet PJJ 2000

For 1990-2009 cars

| Control Settings | System Response
--- | --- | ---
A/C SW | Mode Lever | Temp Control | Fan Switch | Blower Speed | A/C Outlet | Heater Outlets | Defrost Outlets | See Remark | Rear Seat Heat Duct
OFF | OFF | COLD | LOW | Off | No Air Flow | No Air Flow | No Air Flow | - | None
OFF | MAX | COLD | LOW | Low | Air Flow | Min Air Flow | No Air Flow | A, I, K | Min
OFF | MAX | COLD | LOW to HIGH | Low to High | Air Flow | Min Air Flow | No Air Flow | B, F | Min
OFF | VENT | COLD | HIGH to M2 | High to M2 | Air Flow | Min Air Flow | No Air Flow | A, C, G | Min
OFF | BI-LEVEL | COLD | M2 | M2 | Air Flow | Air Flow | No Air Flow | A | Min
OFF | HEATER | HOT | HIGH | High | No Air Flow | Air Flow | No Air Flow | A, D, E | Air Flow
OFF | BLEND | HOT | HIGH | High | No Air Flow | Air Flow | Air Flow | A, H | Min
OFF | DEF | HOT | HIGH | High | No Air Flow | Min Air Flow | Air Flow | A, H, I | Min
ON | VENT | COLD | HIGH | High | Air Flow | No Air Flow | No Air Flow | J | None
REMARK A: Engagement of the detent must be felt in each mode.
REMARK B: Progressive blower speed increase must occur between LO, M1, M2 and HI
REMARK C: Listen for the reduction of air noise.
REMARK D: Inspect the temperature level for full travel (Hot or Cold).
REMARK E: Inspect for air flow at the side window defogger outlets
REMARK F: At room temperature the air from the center A/C outlets should feel cold with the blower speed on HIGH.
REMARK G: The temperature from the vent outlets should be the same as the temperature outside of the vehicle.
REMARK H: Temperature from the defroster outlets should be above the temperature outside the vehicle.
REMARK I: Slight engine flare should be noted as the A/C clutch engages and disengages.
REMARK J: Barrels and vanes must hold position with the fan on HIGH.
REMARK K: Engage the REC button and an increase of air flow out of the A/C outlets must occur.

The vehicle A/C must be on for a minimum of 90 seconds prior to performing the tests.

Perform each step of the functional tests with the following conditions in place:

• | The windows are up.

• | The doors are closed.